Formação de moléculas diatômicas heteronucleares utilizando pulsos de laser com frequência dependente do tempo

• Autor(a) principal: Almeida, Igor César de
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFSCAR
• Texto Completo: https://repositorio.ufscar.br/handle/ufscar/11082
• topic: Física Atômica e Molecular; Fotoassociação; Interação átomos-laser; Estabilização Vibracional; Vibrational Stabilization; Chirped pulse; Low Temperature Physics; Photoassociation; CIENCIAS EXATAS E DA TERRA::FISICA::FISICA ATOMICA E MOLECULAR::ESPECTROS MOLECULARES E INTERACOES DE FOTONS COM MOLECULAS; CIENCIAS EXATAS E DA TERRA::FISICA::FISICA ATOMICA E MOLECULAR::PROCESSOS DE COLISAO E INTERACOES DE ATOMOS E MOLECULAS

In this work, we consider the formation and vibrational stabilization of cold hetero- nuclear molecules using infrared nanosecond pulses. Starting with a pair of coliding cold atoms of dissimilar species, we aim to form a molecule in its eletronic and vibrational ground level by means of the interaction with the laser field. In order to meet this goal, we propose the employment of a single pulse with a time-dependent frequency that, fol- lowing the interatomic potential anarmonicity, promotes the formation and stabilization of a molecule following a predefined transition pathway. We show that the proposed scheme can efficiently form cold molecules in the vibrational ground level. Calculations have been performed for a model representing a colision between a lithium atom and a cesium atom in the milikelvin temperature range.